CODEWITHSUNDEEP
dockerdocker-composedockerfile
nanana
nanana

Reputation: 77

Possble to Share folders between container to container?

I want to know how to share application folder between container to container. I found out articles about "how to share folder between container and host" but i could not find "container to container".

I want to do edit the code for frontend application on backend so I need to share the folder. <- this is also my goal.

Any solution?

My config is like this

/
 - docker-compose.yml
|
 - backend application
  |
   _ Dockerfile
|
 -Frontend application
  |
   - Dockerfile

And docker-compose.yml is like this

version: '3'
services:
 railsApp: #<- backend application
    build: .
    command: bundle exec rails s -p 5000 -b '0.0.0.0'
    volumes:
      - code_share:/var/web/railsApp
    ports:
      - "3000:3000"
  reactApp: #<- frontend application
    build: .
    command: yarn start
    volumes:
      - code_share:/var/web/reactApp
    ports:
      - "3000:3000"

volumes:
 code_share:

Upvotes: 0

Views: 66

Answers (1)

Chang Sheng
Chang Sheng

Reputation: 110

You are already mounting a named volume in both your frontend and backend now.

According to your configuration, both your application /var/web/railsApp and /var/web/reactApp will see the exact same content. So whenever you write to /var/web/reactApp in your frontend application container, the changes will also be reflected in the backend /var/web/railsApp

To achieve what you want (having railsApp and reactApp under /var/web), try mounting a folder on host machine into both the container. (make sure your application is writing into respective /var/web folder correctly.

mkdir -p /var/web/railsApp /var/web/reactApp

then adjust your compose file:

version: '3'
services:
 railsApp: #<- backend application
    build: .
    command: bundle exec rails s -p 5000 -b '0.0.0.0'
    volumes:
      - /var/web:/var/web
    ports:
      - "3000:3000"
  reactApp: #<- frontend application
    build: .
    command: yarn start
    volumes:
      - /var/web:/var/web
    ports:
      - "3000:3000"

Upvotes: 2

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